Panasonic WH-MXF12D3E8 [68/118] Error codes table

Panasonic WH-MXF12D3E8 [68/118] Error codes table
68
16.4 Error Codes Table
Diagnosis display Abnormality / Protection control Abnormality Judgement Primary location to verify
H00 No abnormality detected
H12 Indoor / Outdoor capacity unmatched 90s after power supply
• Indoor/outdoor connection wire
• Indoor/outdoor PCB
• Specification and combination table in
catalogue
H15
Outdoor compressor temperature sensor
abnormality
Continue for 5 sec.
• Compressor temperature sensor
(defective or disconnected)
H23
Indoor refrigerant liquid temperature
sensor abnormality
Continue for 5 sec.
• Refrigerant liquid temperature sensor
(defective or disconnected)
H42 Compressor low pressure abnormality
• Outdoor pipe temperature sensor
• Clogged expansion valve or strainer
• Insufficient refrigerant
• Outdoor PCB
• Compressor
H62 Water flow switch abnormality Continue for 1 min. • Water flow switch
H64 Refrigerant high pressure abnormality Continue for 5 sec.
• Outdoor high pressure sensor
(defective or disconnected)
H70 Back-up heater OLP abnormality Continue for 60 sec.
• Back-up heater OLP
(Disconnection or activated)
H72 Tank sensor abnormal Continue for 5 sec. • Tank sensor
H76
Indoor - remote control communication
abnormality
• Indoor - control panel
(defective or disconnected)
H90
Indoor / outdoor abnormal
communication
> 1 min after starting
operation
• Internal / external cable connections
• Indoor / Outdoor PCB
H91 Tank heater OLP abnormality Continue for 60 sec.
• Tank heater OLP
(Disconnection or activated)
H95 Indoor / Outdoor wrong connection • Indoor/Outdoor supply voltage
H98
Outdoor high pressure overload
protection
• Outdoor high pressure sensor
• Water pump or water leakage
• Clogged expansion valve or strainer
• Excess refrigerant
• Outdoor PCB
H99 Indoor heat exchanger freeze prevention
• Indoor heat exchanger
• Refrigerant shortage
F12 Pressure switch activate
4 times occurrence within
20 minutes
• Pressure switch
F14 Outdoor compressor abnormal revolution
4 times occurrence within
20 minutes
• Outdoor compressor
F15 Outdoor fan motor lock abnormality
2 times occurrence within
30 minutes
• Outdoor PCB
• Outdoor fan motor
F16 Total running current protection
3 times occurrence within
20 minutes
• Excess refrigerant
• Outdoor PCB
F20
Outdoor compressor overheating
protection
4 times occurrence within
30 minutes
• Compressor tank temperature sensor
• Clogged expansion valve or strainer
• Insufficient refrigerant
• Outdoor PCB
• Compressor
F22
IPM (power transistor) overheating
protection
3 times occurrence within
30 minutes
• Improper heat exchange
• IPM (Power transistor)
F23
Outdoor Direct Current (DC) peak
detection
7 times occurrence
continuously
• Outdoor PCB
• Compressor
F24 Refrigeration cycle abnormality
2 times occurrence within
20 minutes
• Insufficient refrigerant
• Outdoor PCB
• Compressor low compression
F25
Cooling / Heating cycle changeover
abnormality
4 times occurrence within
30 minutes
• 4-way valve
• V-coil
F27 Pressure switch abnormality Continue for 1 min. • Pressure switch
F36
Outdoor air temperature sensor
abnormality
Continue for 5 sec.
• Outdoor air temperature sensor
(defective or disconnected)

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